how to fix-IBM Thinkpad R61- Security chip ?

When i power on the laptop , it gives 4 beeps 4 times & shuts down. I came to know it is due to security chip problem.
i have visited various forums , but no help.
krishna, September 2013


done
A bit old this question. (Because it is in the wrong section.)

A bad security chip means a new motherboard is required. In other words the laptop is scrap.

T, August 2015
link Click here to see other fixes for IBM Thinkpad.